Kent · England
New-build mastic & snagging in Chartham, Kent
New build mastic in Chartham from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Plot mastic for developers ahead of handover
- New-build shower sealant that has already split
- Cracked caulk along new skirting
New build mastic in Chartham, done properly
We never seal over a failed new-build bead. New silicone won’t bond to old silicone, so the joint is cut out, cleaned, dried and resealed. We’re often asked to deal with kitchen sealant that has pulled off the wall and new-build shower sealant that has already split, across bathrooms & en suites, show homes and plot handovers.
In a village or hamlet like Chartham, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Each still needs its sealant and floor joints finished properly.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Place
- Chartham (CT4)
- Region
- Kent
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
You don’t need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the work takes a few hours for most snagging lists, longer for a run of plots in most cases. Somewhere as small as Chartham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We go through the snagging list or plot schedule and agree the joints to do.
- The old bead comes out in full, with no layer left behind.
- We clean off dust from the build and prime the surfaces where the product needs it.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Every job is quoted individually, so start by telling us what you need. Just ring 0345 464 0079 or send us an email with the details.
Related advice
Common questions in Chartham
I let a flat near Chartham station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Is Chartham in your area for new build mastic?
Yes, Chartham is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we’ll send you a clear quote.
What does new build mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or drop us an email and tell us what needs doing and where.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or drop us an email.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Will the old sealant be removed?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Is there a guarantee?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Nearby places to Chartham
What else we do in Chartham
How to look after the new joints
Looking after new joints is easy:
- Ventilate bathrooms well, especially in the first year
- Watch for new gaps as the house dries out
- Clean sealant with mild detergent, not abrasives
- Raise failed sealant with the developer while you’re covered
Don’t stand on the bath edge or the lip of the tray in the first few weeks. If a bath or tray moves when you stand in it, get it looked at.
Report failed sealant to the builder while you’re in the snagging period. Once it ends, the repair may be down to you, so raise it early.
What affects the quote in Chartham
Your quote is based on your job. We look at:
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- The number and length of the joints
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts.
Helping us quote
What to tell us when you ask for a quote:
- The rough size of the job
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and send you a clear quote.
How the job changes by surface
Windows and doors
Internal joints between frames and plaster often crack as a new house dries. We remove cracked sealant and apply a flexible one.
Kitchens
Worktop, upstand and sink joints in new kitchens often get a hurried bead. We take it out and reseal neatly, colour-matched where it shows.
New build mastic in Chartham: local notes
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For new homes near Chartham station, it’s worth checking the sealant early, while snags are still fresh.
Chartham is about 3 miles south-west of Canterbury, in Kent. Every kind of property in Chartham can book us for new build mastic. The work is guaranteed for a year. We cover 922 towns and villages across Kent. There’s also a page for Chelmsford, about 40 miles away.
All of CT4 is covered for new build mastic, from the main roads to the quietest streets. You’ll find streets such as Station Road, River Court and The Green, all of which we cover. Close by, we work in Shalmsford Street (1 mile south), Mystole (1 mile south-west), Chartham Hatch (1 mile north), Garlinge Green (2 miles south) and Thanington (2 miles north-east). Further out, we also cover Ashford (10 miles south-west), Canterbury (3 miles north-east), Dover (15 miles south-east), Sittingbourne (14 miles north-west), Folkestone (14 miles south-east) and Whitstable (7 miles north).
Local landmarks in Chartham
Locally, jobs take us to homes and businesses close to No Man's Orchard and The Artichoke Inn, among other places. Chartham has its own railway station: Chartham station. A little further out are Chilham Castle (2.7 miles west) and Whitefriars Shopping Centre (3.1 miles north-east). Green spaces nearby include Blean Woods RSPB Reserve.
For landlords and businesses
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
When it is not the sealant
In fairness, some problems need a different trade:
- Your warranty claim itself, which is between you and the builder
- Cracking that points to a structural problem
- Leaking fittings rather than failed sealant
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Joints and surfaces we work on
- Plot handovers
- Kitchens
- Windows & doors
- Bathrooms & en suites
- Skirting & floors
- Show homes
Do you need new build mastic in Chartham?
When the heating goes on in the first winter, the house dries fast. Gaps open along skirting, frames and worktops and cracks appear in the sealant.
The problems people generally mention when they call include:
- Messy sealant that spoils new finishes
- Sealant that never bonded to the surface
- Frame joints opening as the plaster dries
- Skirting joints opening in the first winter
Around Chartham, as everywhere, new build mastic is only as good as the preparation behind it.
Before you book anyone
- How the joint is cleaned and prepared
- Whether all the old sealant comes out first
- How the colour is chosen
- How long to leave it before use